Marchant de Lange was in a destructive mood for Gloucestershire as they drew with Middlesex, taking figures of 6-49.
Teammate and captain Graeme van Buuren made 75 from 103 balls with 10 fours and two sixes before Middlesex's Stephen Eskinazi made an unbeaten 65 from 96 balls with eight fours.
Northamptonshire's Ricardo Vasconcelos made 30 off 52 balls with four fours in a draw with Leicestershire.
Durban-born Wayne Madsen top-scored for Derbyshire with 104 off 226 balls (10 fours, one six) in a draw with Yorkshire.